Pneumatic tire tread and buttress



FIG. 1 is a perspective view of a pneumatic tire tread and buttress showing my new design, it being understood that the pattern is repeated throughout the circumference of the tread and buttress, the opposite side being substantially the same as that shown;

FIG. 2 is a front elevational view thereof; and,

FIG. 3 is a fragmentary side elevational view thereof.

The broken line showing of the environmental structure in the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a pneumatic tire tread and buttress, as shown and described. 